diff --git a/hw/application_fpga/core/mta1/rtl/mta1.v b/hw/application_fpga/core/mta1/rtl/mta1.v
index 55167c9..ca95979 100644
--- a/hw/application_fpga/core/mta1/rtl/mta1.v
+++ b/hw/application_fpga/core/mta1/rtl/mta1.v
@@ -61,8 +61,6 @@ module mta1(
   localparam ADDR_APP_START  = 8'h0c;
   localparam ADDR_APP_SIZE   = 8'h0d;
 
-  localparam ADDR_DEBUG      = 8'h10;
-
   localparam ADDR_CDI_FIRST  = 8'h20;
   localparam ADDR_CDI_LAST   = 8'h27;
 
@@ -102,9 +100,6 @@ module mta1(
   reg [31 : 0] app_size_reg;
   reg          app_size_we;
 
-  reg [31 : 0] debug_reg;
-  reg          debug_we;
-
 
   //----------------------------------------------------------------
   // Wires.
@@ -163,7 +158,6 @@ module mta1(
         gpio4_reg      <= 1'h0;
         app_start_reg  <= 32'h0;
         app_size_reg   <= 32'h0;
-	debug_reg      <= 32'h0;
 	cdi_mem[0]     <= 32'h0;
 	cdi_mem[1]     <= 32'h0;
 	cdi_mem[2]     <= 32'h0;
@@ -205,10 +199,6 @@ module mta1(
           app_size_reg <= write_data;
         end
 
-	if (debug_we) begin
-	  debug_reg <= write_data;
-	end
-
 	if (cdi_mem_we) begin
 	  cdi_mem[address[2 : 0]] <= write_data;
 	end
@@ -227,7 +217,6 @@ module mta1(
       gpio4_we      = 1'h0;
       app_start_we  = 1'h0;
       app_size_we   = 1'h0;
-      debug_we      = 1'h0;
       cdi_mem_we    = 1'h0;
       cdi_mem_we    = 1'h0;
       tmp_read_data = 32'h00000000;
@@ -261,10 +250,6 @@ module mta1(
             end
 	  end
 
-	  if (address == ADDR_DEBUG) begin
-	    debug_we  = 1'h1;
-	  end
-
 	  if ((address >= ADDR_CDI_FIRST) && (address <= ADDR_CDI_LAST)) begin
 	    if (!switch_app_reg) begin
 	      cdi_mem_we = 1'h1;
@@ -306,10 +291,6 @@ module mta1(
             tmp_read_data = app_size_reg;
           end
 
-	  if (address == ADDR_DEBUG) begin
-	    tmp_read_data = debug_reg;
-	  end
-
 	  if ((address >= ADDR_CDI_FIRST) && (address <= ADDR_CDI_LAST)) begin
 	    tmp_read_data = cdi_mem[address[2 : 0]];
 	  end
diff --git a/hw/application_fpga/fw/mta1_mkdf_mem.h b/hw/application_fpga/fw/mta1_mkdf_mem.h
index 99e499b..86ba740 100644
--- a/hw/application_fpga/fw/mta1_mkdf_mem.h
+++ b/hw/application_fpga/fw/mta1_mkdf_mem.h
@@ -84,7 +84,6 @@ enum {
     MTA1_MKDF_MMIO_MTA1_GPIO4_BIT   = 3,
     MTA1_MKDF_MMIO_MTA1_APP_ADDR    = MTA1_MKDF_MMIO_MTA1_BASE | 0x30, // 0x4000_0000
     MTA1_MKDF_MMIO_MTA1_APP_SIZE    = MTA1_MKDF_MMIO_MTA1_BASE | 0x34,
-    MTA1_MKDF_MMIO_MTA1_DEBUG       = MTA1_MKDF_MMIO_MTA1_BASE | 0x40,
     MTA1_MKDF_MMIO_MTA1_CDI_FIRST   = MTA1_MKDF_MMIO_MTA1_BASE | 0x80,
     MTA1_MKDF_MMIO_MTA1_CDI_LAST    = MTA1_MKDF_MMIO_MTA1_BASE | 0x9c, // Address of last 32-bit word of CDI.
     MTA1_MKDF_MMIO_MTA1_UDI_FIRST   = MTA1_MKDF_MMIO_MTA1_BASE | 0xc0,